Science on the 19th of November 1850 in history

Science

Date	Type	Text
19 Nov 1850 Magic lantern slides	science	Magic lantern slides In 1850, the first U.S. patent for magic lantern slides made of glass plate was issued to their inventor Frederick Langenheim of Philadelphia, Pa. (No. 7,784) as an "improvement in photographic pictures on glass."	0

18th November 1850 20th November 1850

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